EntityCompatibility::convertDateFieldToFormat

static function convertDateFieldToFormat($value, $format)
{
	$setValue = $value;

	if (($value instanceof DateTime)
		|| ($value instanceof Date))
	{
		$phpFormat = $value->convertFormatToPhp($format);
		$setValue = $value->format($phpFormat);
		$setValue = str_replace(" 00:00:00", "", $setValue);
	}

	return $setValue;
}